The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 12, 2006
Filed:
Aug. 26, 2005
Taehee Cho, Los Angeles, CA (US);
Sandor L. Barna, Pasadena, CA (US);
Andrew M. Lever, Surrey, GB;
Kwang-bo Cho, Los Angeles, CA (US);
Chiajen Lee, Irvine, CA (US);
Taehee Cho, Los Angeles, CA (US);
Sandor L. Barna, Pasadena, CA (US);
Andrew M. Lever, Surrey, GB;
Kwang-Bo Cho, Los Angeles, CA (US);
Chiajen Lee, Irvine, CA (US);
Micron Technology, Inc., Boise, ID (US);
Abstract
A mechanism for discharging parasitic capacitance at an input of an operational amplifier, which is shared between two stages of a pipelined analog-to-digital converter and/or two channels of signal processing circuitry, before the amplifier configuration of the stages/channels is switched. The discharging act occurs when a short reset pulse is generated between two clock phases. The short reset pulse is applied to a switch connected to the operational amplifier input. When the reset pulse closes the switch, a discharge path is created and any parasitic capacitance at the operational amplifier input is discharged through the path. The discharging of the parasitic capacitance substantially mitigates the memory effect and the problems associated with the memory effect.